Chemistry 0620 · IGCSE · Separation and purification

Separation and purification — practice question

The equation for the reaction between aqueous calcium nitrate and aqueous sodium hydroxide is given below. $\text{Ca(NO}_3\text{)}_2\text{(aq)} + 2\text{NaOH(aq)} \rightarrow \text{Ca(OH)}_2\text{(s)} + 2\text{NaNO}_3\text{(aq)}$ Which process is used to separate calcium hydroxide from the mixture?

  • Achromatography
  • Bcrystallisation
  • Cdistillation
  • Dfiltration

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